Granted Patent
Utility
US 4,226,959 · App. 06/086,894
Process for the preparation of polymeric acetal carboxylates
Inventors:
David R. Dyroff, Victor D. Papanu
Patented Case
View Patent ↗
Granted: Oct 7, 1980
Filed: Oct 22, 1979
Inventors
David R. Dyroff
Victor D. Papanu
Assignee (at issue)
Monsanto Company
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.